Class-L Allpole Filters

Class-L filters where introduced by Papoulis, who first only considered the case of odd n, in the paper A.Papoulis, Optimum Filters with Monotonic Response, Proceedings of the IRE, March 1958, pp.606-609. The even case was then considered by Papoulis and independently Fukuda in the papers A.Papoulis, On Monotonic Response Filters, Proceedings of the IRE, February 1959, pp.332-333 and M.Fukuda, Optimum Filters of Even Orders with Monotonic Response, IRE Transactions on Circuit Theory, September 1959, pp.277-281.

Parameters of Class-L Filters

Inputparameters are degree n and attenuation in dB.

        degree n of filter (here 2 ≤ n ≤ 10)
        dB (maximal attenuation in passband)
ω =

Tables of Class-L Filters

Below tables of Class-L allpole filters are given for some values of α_p. Clicking on the entries leads to tables of Class-L filters having degrees n=2,3,..,10.

          α_p=0.5 dB

          α_p=1.0 dB

          α_p=2.0 dB

          α_p=3.01 dB

For custom designs having other values of α_p send an email to filterdesign@klaus-huber.net containing α_p in dB.